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Skip Navigation LinksDNREC : Division of Watershed Stewardship : Drainage and Stormwater Section



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Flooding in DelawareFlood Mitigation Program
Whether it’s caused by a hurricane, a northeaster, or even heavy rain, flooding is a year-round threat in Delaware. Just a few inches of rainfall can cause significant damage to homes and businesses.


On May 23, 2017 FEMA and DNREC hosted an Open House regarding Flood Studies in New Castle County.

Areas studied in the Preliminary Flood Risk Maps for Kent and Sussex Counties:

DNREC Flood Planning Tool: This is a link to an interactive web map application designed to aid you in researching your flood risk in the State of Delaware. If unable to view, try updating your web browser or using Google Chrome.


Recent Floodplain Revision
DNREC’s Division of Watershed Stewardship performed a floodplain study and submitted a Letter of Map Revision (LOMR) to FEMA to revise the floodplain for the Tributary of South Branch Naaman Creek, generally located in the Brandywood and adjacent communities. The revision to the floodplain became effective May 11, 2016.  

The Revised FEMA Flood Insurance Rate Maps can be accessed at the links below:
 Panel 10003C0059J
 Panel 10003C0078J

To view a Work Map with the previous and effective 1 percent annual chance flood hazard, which also includes aerial photography and property lines, please use the following link:
• Work Map


The following links provide a breakdown of the higher floodplain ordinance standards adopted by local municipalities:

The link below will take you to the Model Floodplain Management Ordinances:

The links below provide information on flooding and flood-related topics within the Division of Watershed Stewardship:

The following link provides details on how the Coastal Study was conducted:  Coastal Floodplain Data.




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